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Diodes Incorporated AP1703GWG-7
- Part No.:
- AP1703GWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1703GWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AP1703GWG-7 from Diodes Incorporated is a 3-pin microprocessor reset supervisor IC with active-low push-pull RESET output, 2.25V ±1.5% precision reset threshold, 240ms minimum reset timeout, 20µA typical supply current, and guaranteed operation down to VCC = 1V. It monitors +2.5V/+3.0V/+3.3V systems in portable battery-powered microcontroller applications.
For engineers reviewing the AP1703GWG-7 datasheet, AP1703GWG-7 pinout, AP1703GWG-7 application, or AP1703GWG-7 equivalent, key selection factors include reset threshold accuracy (±1.5%), immunity to VCC transients ≤100µs at 100mV overdrive, push-pull drive capability (1.2mA sink), SC59 package footprint compatibility, and legacy design support where APX809/810 migration is not yet feasible.
Technical Context
The AP1703GWG-7 implements a precision bandgap-based voltage comparator with internal 2.25V reference and 30ppm/°C tempco, feeding a monostable delay circuit that enforces ≥240ms reset assertion after VCC recovery. Its push-pull output stage eliminates external pull-up resistors and ensures valid logic levels across full VCC range (1.0–5.5V).
No external components are required: the device integrates all timing, reference, and output drive functions in a single SC59-3L package. Reset assertion is immune to fast negative-going VCC transients ≤100µs when overdrive is ≤100mV, per characterization data on glitch immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.25V ±1.5% at 25°C - ensures reliable reset initiation for 2.5V systems with 10% margin below nominal |
| Reset Timeout | 240ms min - guarantees µP initialization completes before release, meeting ARM Cortex-M and PIC timing requirements |
| Supply Current | 20µA typ. - enables multi-year battery life in coin-cell–powered IoT sensors and wearables |
| VCC Operating Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout, down to functional logic threshold |
| Output Drive | 1.2mA sink @ VCC ≥ VTH min - directly drives CMOS inputs without external pull-up, reducing BOM count |
| Transient Immunity | 100µs max glitch duration at 100mV overdrive - suppresses noise-induced false resets in noisy automotive/industrial rails |
| Tempco | 30ppm/°C - maintains <±2.5% threshold drift over –40°C to +105°C junction range |
Pinout & Package
AP1703GWG-7 is housed in an SC59-3L (SOT-23 compatible) surface-mount package measuring 2.90–3.10mm × 1.90mm × 1.00–1.30mm, with gull-wing leads and lead-free (RoHS-compliant) green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection to system ground plane |
| 2 | VCC | Power supply input; accepts 1.0–5.5V; bypass capacitor (0.1µF) required adjacent to pin for transient immunity |
| 3 | RESET | Active-low push-pull reset output; sinks 1.2mA minimum; no external pull-up needed; asserts low during VCC < 2.25V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.25V threshold | ±1.5% tolerance ensures deterministic reset point for 2.5V systems without calibration overhead |
| 240ms reset timeout | Guaranteed minimum hold time satisfies boot sequence timing of ARM Cortex-M0/M3 and Microchip PIC16/18 MCUs |
| Push-pull RESET output | Eliminates need for external pull-up resistor, reducing PCB area and component count in space-constrained designs |
| 20µA supply current | Enables >5-year operation on CR2032 coin cell in always-on monitoring nodes with periodic wake-up |
| VCC = 1V reset validity | Ensures reset remains asserted through full power collapse, preventing partial execution in ultra-low-VCC states |
Applications
| Industrial PLC I/O Modules | Portable Medical Sensors |
|---|---|
Use Scenario: Power sequencing in DIN-rail mounted PLC modules with dual 3.3V/5V rails and isolated communication interfaces. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail and asserts active-low RESET to ARM Cortex-M4 MCU during brownout or hot-swap events. Use Value: Prevents firmware corruption by holding MCU in reset until stable 3.3V is confirmed, with 240ms timeout ensuring complete register initialization. | Use Scenario: Battery-powered ECG patch with Bluetooth LE connectivity and continuous analog front-end sampling. IC Role / Device Role / Timing Role: Supervises 2.5V analog supply and 3.0V digital supply, asserting RESET to MSP430FR59xx MCU on voltage sag. Use Value: 20µA quiescent current extends single-CR2032 lifetime beyond 18 months; 2.25V threshold aligns precisely with 2.5V rail dropout margin. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Low-voltage monitoring in 12V-to-3.3V converted subsystems controlling door locks, lighting, and HVAC actuators. IC Role / Device Role / Timing Role: Detects load-dump–induced sags on 3.3V rail and forces reset of Infineon AURIX TC2xx safety MCU. Use Value: 100µs transient immunity prevents false resets during alternator switching noise; SC59 package withstands automotive thermal cycling. | Use Scenario: Revenue-grade electricity meter with metrology SoC (e.g., Analog Devices ADE7953) operating from 3.0V regulated rail. IC Role / Device Role / Timing Role: Ensures clean startup and brownout recovery of metrology processor and secure element during grid fluctuations. Use Value: ±1.5% threshold accuracy avoids premature reset during nominal 3.0V variation; 30ppm/°C tempco maintains stability across –25°C to +70°C meter enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX809S23-22 | 2.2V fixed threshold, 140ms timeout, SOT23-3 package, 1.5µA IQ | Lower IQ suits ultra-low-power applications; shorter timeout may require MCU-side software extension | Select for new designs prioritizing lowest power and RoHS-3 compliance; not pin-compatible with SC59 |
| TPS3808G12DBVR | 1.2V adjustable threshold via external resistor, 200ms timeout, 2.5µA IQ, SOT23-6 | Requires external resistor network; wider VCC range (0.8–6.0V); six-pin layout increases PCB area | Choose when threshold flexibility or tighter IQ spec is critical; redesign required for pinout and footprint |
Compared with APX809S23-22 and TPS3808G12DBVR, AP1703GWG-7 offers higher reset timeout (240ms vs. 140ms/200ms) and tighter threshold accuracy (±1.5% vs. ±2.0%/±0.5% with resistor tolerance), making it preferable for legacy systems requiring robust brownout recovery without firmware modification.
Availability
AP1703GWG-7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, portable medical sensors, automotive body control units, and smart energy meters requiring stable component supply for long-lifecycle embedded programs.
Supply support for AP1703GWG-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and consumer markets.
The AP170x series belongs to Diodes' microprocessor supervisory product line, designed specifically for cost-sensitive, space-constrained applications requiring precise, low-power reset functionality without external components.
FAQ
What is the function of the RESET pin on AP1703GWG-7?
The RESET pin is an active-low push-pull output that asserts logic low whenever VCC falls below 2.25V and remains low for ≥240ms after VCC rises above the threshold. It sinks up to 1.2mA and requires no external pull-up, directly interfacing with standard CMOS reset inputs on MCUs like STM32, PIC, and MSP430 families.
Is AP1703GWG-7 pin-compatible with AP1701GWG-7 or AP1702GWG-7?
Yes - all AP170xGWG-7 variants share identical SC59-3L pinout (GND–VCC–RESET), same package dimensions, and identical electrical interface. Only reset threshold (2.25V), output polarity (active-low), and timeout behavior are fixed per part number; no board-level changes are needed when substituting within the AP170x family.
Does AP1703GWG-7 require an external capacitor on the RESET line?
No - the push-pull output architecture eliminates the need for an external pull-up capacitor or resistor. A 0.1µF ceramic bypass capacitor is required on the VCC pin (not RESET) to ensure transient immunity, as specified in the Diodes Inc. application note AP02001 for SC59 pad layout and decoupling.
Why is AP1703GWG-7 marked "Not Recommended for New Design"?
Diodes Incorporated issued this notice because the newer APX809/810 series offers improved specifications: lower IQ (1.5µA vs. 20µA), tighter threshold tolerance (±0.5% vs. ±1.5%), and enhanced ESD performance. AP1703GWG-7 remains fully supported for existing designs and legacy production, with no obsolescence timeline published.
AP1703GWG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.25V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AP1703GWG-7 FAQ
1.How can I place an order for AP1703GWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1703GWG-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP1703GWG-7 reliable?
The price and inventory of AP1703GWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1703GWG-7 is usually 5 days.
3.What payment methods are accepted for AP1703GWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1703GWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1703GWG-7?
AP1703GWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1703GWG-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP1703GWG-7?
For technical support, including AP1703GWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1703GWG-7 requirements.
6.How does Aetrix verify that AP1703GWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1703GWG-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP1703GWG-7 meets industry standards.
7.What is the process for return or replacement of AP1703GWG-7?
All AP1703GWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1703GWG-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP1703GWG-7 part is unused and in its original packaging.
Return procedure for AP1703GWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1703GWG-7 Tags
-
MIC826SYMT-TR
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